With all the Different sizing scales out there, what works for one holster, does not work for others! So here are some helpful steps on finding the right size holster for your gun.

Hint: I have also included a cheat sheet at the bottom of this post showing common firearms and the holster size you need for each!

If you have determined that one of our Kydex holsters (these are the hard plastic holsters such as the TWAW IWB or TWAW OWB/Convertible holsters that are molded to the exact specifications of each individual gun model) then no need to worry about sizing. Because these holsters are made specifically for your gun, it will be the perfect fit.

The guide below will help you with sizing for all of the other holsters available that are not molded Kydex.

Let’s Get Started

The first thing to do is to know the size of your gun. You can determine this by looking at your Guns owner’s manual, look at your guns manufacturer’s direct webpage, get out your handy ruler and measure your gun or my favorite and perhaps the easiest of all go to Google and type in “[your gun model] specs” + Search. Instantly you have the main measurements you will need to properly fit your firearm. You will want to pay attention to

The barrel length

The Overall Length

Trigger Guard Shape

If your gun has a laser or not

Next, look at the holsters description. There will most likely be a measurement scale they use to determine to size. This can be an indication the barrel length, the overall length, each holster is different so pay close attention to what they are asking for.

From step one, you will know your gun specifications (specs), so the next step is to compare those to the holsters’ sizing and you will have the size you need!

The internet is amazing, isn’t it? Finding the right size holster for your gun has never been easier!

So let’s look at an example

Say I have a Glock 43 and I am trying to buy a Magnetic Waistband Holster from The Well Armed Woman Store.

Size Your Gun

First, I Google: ” Glock 43 specs”

This should bring up a quick specification hit (as pictured)

which may not always be reliable depending on the source… remember anyone can put something on the internet. Make sure you trust your source.

You should also find a link to the gun model on the manufacturer’s website which you can always trust.

So, I have found the barrel length of the Glock 43 is 3.41″, which I got from the Glock website.

Size the Holster

Next, I look at the sizing chart on in the description of the Magnetic Waistband Holster on Th Well Armed Woman Store.

You can see from this picture the LG Auto Square fits guns with barrel lengths from 3″-3.6″ which is where my Glock 43 falls into.

Another thing you may note from this specific holster is the “round” or “square” trigger guard, this is referring to the shape of your trigger guard. To give you an idea of the difference. You can see below that the Glock 43 has a square shaped trigger guard while on the other hand, the Sig P938 has a round shaped trigger guard.

This is just one of those measurements that differ from holster to holster. That is why you need to know the specs of your gun in order to find the right fit.

To make things easier, we have compiled a quick go to sizing chart for common gun models we get questions about and the holsters that fit them on The Well Armed Woman Store.

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